We are using pairs of 7731 to interconnect some branchs to our main offices (there are 23 pairs in total).
Sometimes these links do not perform well (our monitoring tool shows packet losses and the users complain about).
I took the device log during a fail, and I noticed messages like below:
- (...) wifi0: Interference detected: util_busy: 327 > 300, badness=1
- (...) wifi0: RB thinks Ch.100 is not optimal. Best available is Ch.124. Reason: non-blacklisted channel found
- (...) wifi0: RB won't change from Ch.100 to Ch.124 (warn-only).
- (...) wifi0: Interference detected: tx_lretry: 1398 > 1000, badness=0
We are using the "SmartSelect" channel, but it didn't change the channel automatically. The problem persisted for 2 hours, and the solution was reboot the root bridge device.
Is there an option to force the change of the channel when that occurs?